【Backlit LCD Display】The digital insulation resistance tester features a large LCD screen with a backlight, easily activated by pressing the BL button, making readings clear and visible in any lighting conditions 【Automatic Discharge Function】With automatic discharge for added safety, the tester performs discharging tests without the need for manual operation, ensuring a safer testing process 【Portable and Compact】Designed for convenience, this lightweight and compact device can be easily held with one hand, making it ideal for on-the-go use. It offers portability without compromising on performance 【Precise Measurement】This tester provides accurate and reliable measurements, ensuring you get precise insulation resistance values for your electrical testing needs 【Convenient Stand Design】The back of the device features a built-in stand, allowing for hands-free operation and easy viewing during testing, adding to its overall functionality Specifications: DC Voltage: 0V-750V AC Voltage: 0mV-1000V Capacitance: 0nF-60mF Resistance: 0-60MΩ Diode: Supported Buzzer: Supported Weight: 419g Max Count: 6000 counts Material: ABS/Silicone Auto Power Off: 15 minutes of inactivity, auto shutdown Battery Model: 1.5V AA batteries *6 (not included) Auto Discharge: Supported HOLD (Data Hold): Supported Low Battery Display: Supported Test Voltage Range 100V: Display Range 0.1~20MΩ 20~100MΩ Test Voltage Range 250V: Display Range 0.1~20MΩ 20~100MΩ Test Voltage Range 500V: 0.1~20MΩ 20~100MΩ 200~500MΩ Test Voltage Range 1000V: Display Range 0.1~20MΩ 20~100MΩ 200~500MΩ 500~2000MΩ